One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,7,8)(3,4,6,5)(10,13)(14,16)(17,18)(19,23)(20,22)(21,24)(1,3,7,6)(2,5,8,4)(10,13)(11,15)(17,18,20,22)(19,21,24,23)(1,4,7,5)(2,3,8,6)(9,10)(11,14)(12,13)(15,16)(17,18)(19,21)(20,22)(23,24)(1,4,7,5)(2,3,8,6)(9,11)(10,14)(12,15)(13,16)(17,19,20,24)(18,21,22,23)(1,5,7,4)(2,3,8,6)(1,6,7,3)(2,5,8,4)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.